Home / 8,639.85-12,963.60-4,744.14

Finding the Fourth Proportional to 8,639.85, 12,963.60 and 4,744.14

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Solution

The fourth proportional to 8,639.85, 12,963.60 and 4,744.14 is: 7,118.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.85 : 12,963.60 = 4,744.14 : x
  2. Step 2: Convert to fraction form
    8,639.85/12,963.60 = 4,744.14/x
  3. Step 3: Cross multiply
    8,639.85x = 12,963.60 × 4,744.14
  4. Step 4: Simplify right side
    8,639.85x = 61,501,133.30
  5. Step 5: Solve for x
    x = 61,501,133.30/8,639.85
  6. Step 6: Final answer
    x = 7,118.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.